Fluorescent tube



FIG. 1 is a front plan view of a fluorescent tube showing my new design.

FIG. 2 is a top plan view thereof.

FIG. 3 is a bottom plan view thereof.

FIG. 4 is a left plan view thereof.

FIG. 5 is a right plan view thereof.

FIG. 6 is a rear plan view thereof; and,

FIG. 7 is a perspective view thereof. 

The ornamental design for a fluorescent tube, as shown and described. 